DTC U1293-87: Lost Communication between Hybrid Powertrain Control Module and Active Grille Air Shutter Missing Message [12/2019 - 10/2021]: Description

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The swing grille actuator assembly and hybrid vehicle control ECU send and receive signals via CAN communication.

If a communication error occurs between the swing grille actuator assembly and hybrid vehicle control ECU, the ECM stores this DTC.

DTC No.	Detection Item	DTC Detection Condition	Trouble Area	MIL	Memory	Note
U1293-87	Lost Communication between Hybrid Powertrain Control Module and Active Grille Air Shutter Missing Message	All of the following conditions are met and the ECM receives a malfunction signal 17 times* (1 trip detection logic): Ignition switch ON The grille shutter is not in winter control mode. No communication between swing grille actuator assembly and hybrid vehicle control ECU	CAN communication system Hybrid vehicle control ECU Swing grille actuator assembly	Comes on	DTC stored	SAE Code: U1293

HINT:

*: For every 65 ms that the ECM receives a grille shutter system malfunction signal from the grille shutter ECU (swing grille actuator assembly) the ECM determines it has received the signal 1 time. If the ECM determines the malfunction signal has been received 17 consecutive times (the signal is received for approximately 1 second continuously), it will store a DTC.